Mesh does not move along with bones in pose mode (uses rigify armature) Ver 2.75
I played around with your .blend a little (good you uploaded it...). I realized that the Armature modifire got removed. I dont know how this happend.

Just add the modifire again and you will be fine.
In the picture you can see the needed settings.
I also realized that your armature is scaled extremely big. preess alt + s to reset the scale if this size wasn't intended.
By the way you can delete all the annoying meshes in the last layer. they arn't needed anymore.